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function vider (L){L.length=0;}
function transfert (L1,L2,simple){index1 = L1.selectedIndex;
if(index1==-1){alert ("Vous n'avez pas selectionne d'element.");return;}
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for (i = 0 ; i < L1.length ; i++){if (i%2==0){L1.options [i].style.background="#cccccc";}else{L1.options [i].style.background="#ffffff";}}
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function valide (L1,L2){for (i = L2.length-1 ; i >= 0 ; i--){document.envoi.elements[i].value=L2.options [i].value;}
for (i = L1.length-1 ; i >= 0 ; i--){document.envoi.elements[i+L2.length].value=L1.options [i].value;}
return true;}
function validation(){if(confirm ("Voulez-vous effacer le classement actuel ?")){return true ;}else{return false ;}}
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